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/*
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
*/
#ifdef GL_ES
precision mediump float;
#endif
// testing for char constants in #if and #elif
// Also checking whether reserved words can be redefined.
#define t1 c
#define t2 d
#define asm a
#if(t1==c)
#define t3 3
#elif(t1==d)
#define t4 4
#elif(t2==c)
#define t5 5
#endif
#ifndef t1
#define t7 7
#elif (t2==d)
#define t6 6
#endif
#if (t2=='d')
#define half 5
#else
#define half 8
#endif
#ifdef t22
#define x 5
#endif
void main(void)
{
int sum =0,a=9;
sum = half + sum;
sum = asm + a;
}